CN1116689C - Slide switch - Google Patents

Abstract

The slide switch provided by this invention can improve wear of the movable contact. On a terminal base 3, a terminal groove 17 is provided to extend to a sliding direction of a movable contact 10, after a terminal 30 is inserted into the terminal groove 17, fixed on a rear side by caulking. Terminal base 3 has a coupler potion 20 on a rear side thereof and a coupler terminal 34 formed on an end of a terminal 30 projects into the coupler portion 20 through a through hole. On a surface side of the terminal base 3 on an opposite side of the coupler portion 20, a spacer 8 possessing a smooth sliding face is mounted substantially flush with the contact portion 31 so that lifting of the terminal 30 is prevented.

Description

Slide switch

The present invention relates to a kind of slide switch.

In the prior art, the slide switch that has slide block, the one-piece type terminal base of connection part and terminal is known.Slide block has travelling contact and is free to slide along prescribed direction.The surface of terminal base is provided with the fixed contact that slides for travelling contact, and the inside is provided with connection part.One end of terminal is as the joint Terminal that reaches in the connection part, and other parts are as the said fixing contact.Usually, by injection moulding terminal and terminal base are formed as one.

But, in the integrally formed process of above-mentioned terminal and terminal base, pretty troublesome when being set to terminal in the finishing die during shaping, during near in the location connection part terminal ends, stay on the terminal base surface concavo-convex, like this, when travelling contact slides, can reduce the durability of travelling contact thereon.

In addition, because injection pressure makes the location dislocation or the distortion of fixed contact sometimes, so when inserting several fixed contacts, fixed contact must have enough intervals each other, the result causes the maximization of terminal base, and the degree of freedom of design is also little.

In order to address the above problem, slide switch of the present invention has slide block, terminal base and terminal; Slide block has travelling contact and is free to slide along prescribed direction; Terminal base is formed longways along the glide direction length of slide block, and its face side is as the sliding surface of slide block, and length direction one end of its inside side is provided with connection part; Terminal is formed longways towards the glide direction length of slide block, and its part is exposed to the face side of terminal base and as the fixed contact that slides for travelling contact, simultaneously, is provided with the joint Terminal that reaches in the connection part in length direction one end; It is characterized in that, on terminal base, form terminal groove, this terminal groove is at the surface opening of terminal base, and form can chimeric terminal shape, terminal is inserted this terminal groove, and in the inside of terminal base side riveted and fixed, and, liner plate spare is installed in the face side of terminal base, looks from the face side of terminal base, this liner plate spare covers the terminal part that overlaps with connection part.

At this moment, the surface of liner plate spare is become even surface, and slightly flush, then can make the sliding surface smoothing more of travelling contact, further improve the durability of travelling contact with fixed contact.

The present invention has following effect.Promptly, because terminal is inserted in the terminal groove that is formed on the terminal base that is shaped in advance from the table side, and in the inboard riveted and fixed of terminal base, so, saved the trouble of inserting location when being shaped in the prior art, and needn't worry dislocation or distortion etc. when being shaped, can realize the miniaturization of terminal base, the degree of freedom of design is also big.

In addition, liner plate spare is installed in the surface of terminal base, and looks from the surface of terminal base, cover the part of the connection part top in the terminal, so, when the connection part terminal is connected with external power supply connector, can prevent to float towards the terminal base face side, travelling contact can slide on liner plate spare simultaneously.Like this, concavo-convex few on the sliding surface of travelling contact, can improve the durability of travelling contact.

Fig. 1 is the key diagram that liner plate spare is installed in state on the terminal base.

Fig. 2 is the vertical view of expression slide switch face side.

Fig. 3 is the dorsal view of expression slide switch.

Fig. 4 is the 4-4 line cutaway view of Fig. 2.

Fig. 5 is the 5-5 line cutaway view of Fig. 2.

Fig. 6 is the 6-6 line cutaway view of Fig. 2.

Fig. 7 is the 7-7 line cutaway view of Fig. 2.

Fig. 8 is the vertical view of expression terminal base face side.

Fig. 9 is the terminal base vertical view that has removed liner plate spare.

Figure 10 is the 10-10 line cutaway view of Fig. 9.

The slide switch of one embodiment of the invention is described below with reference to Fig. 1 to Figure 10.Fig. 1 is the key diagram that liner plate spare is installed in state on the terminal base.Fig. 2 is the vertical view of expression slide switch face side.Fig. 3 is the dorsal view of expression shift switching.Fig. 4 is the 4-4 line cutaway view of Fig. 2.Fig. 5 is the 5-5 line cutaway view of Fig. 2.Fig. 6 is the 6-6 line cutaway view of Fig. 2.Fig. 7 is the 7-7 line cutaway view of Fig. 2.Fig. 8 is the vertical view of expression terminal base face side.Fig. 9 is the terminal base vertical view that has removed liner plate spare.Figure 10 is the 10-10 line cutaway view of Fig. 9.

This shift switching is overlooked and is slightly rectangle, has and covers 1, slide block 2 and terminal base 3.Lid 1 is a resin system, and the surface is formed with the sliding eye 4 of growing crosswise, and slide block 2 can be bearing in the sliding eye 4 by shift rod 5 with being free to slide along its length.

Lid 1 is inboard open summary box-shaped, and terminal base 3 is entrenched in herein, and the conjugate foramen 6 of outstanding pawl 7 and sidewall is chimeric and be integral (Fig. 6) from terminal base 3 sides.The part on terminal base 3 surfaces is covered with by liner plate spare 8.

The central portion of slide block 2 forms the lengthwise groove 10 (Fig. 2) that allows bar 5 to move, and as shown in Figure 5, in its inside, is being equivalent to part half side on Fig. 2, and the 1st travelling contact 11 is subjected to the contact pressure that the 1st contact spring 12 applies.Be equivalent to half side part down, the 2nd travelling contact 13 is subjected to the contact pressure that the 2nd contact spring 14 applies.

Give prominence between the 1st travelling contact 11 and the 2nd travelling contact 13 and forming guide projections 15, this projection 15 is entrenched in the guide groove 16 that is formed on terminal base 3 central portions along its length, and moving of slide block 2 guided along guide groove 16 towards length direction.

As shown in Figure 9, terminal base 3 length and width are corresponding with lid 1, are the resinous box-shapeds that slightly is.Face side is as the sliding surface of slide block 2, several terminal grooves 17 that formation is extended towards the glide direction of slide block 2, each terminal described later can insert this terminal groove 17, and these terminal grooves 17 are overlooked and are respectively the shape that slightly is identical, and extends towards the glide direction length length of slide block 2.

This terminal groove 17 is the face side openings towards terminal base 3, and is carved into formation to the inboard.Its bottom is communicated with installing hole 19 (label 19 among Fig. 3, only represented the part in each).This installing hole 19 forms partly along the length direction of terminal groove 17, and penetrates into the back side of terminal base 3.

Surface at terminal base 3 forms recess 18 (Figure 10), and this recess 18 is used to accommodate the aftermentioned contact portion of terminal, in the one jiao of side in length direction one end at terminal base 3 back sides, and the outstanding integratedly connection part 20 that forming.

Be formed with the terminal groove 21 that several penetrate into terminal base 3 sides in this connection part 20.Be formed with a pair of location notch 22 (Fig. 9) on the surface of the terminal base 3 that liner plate spare 8 is installed, the side was some in this location notch 22 stretched into from the minor face that is formed with connection part 20 1 sides, and, also form a pair of copulational protuberance 23a, the 23b (Fig. 5) that is used to push liner plate spare upper surface along long side.

As shown in Figure 5, liner plate spare 8 is resin system plate-shaped parts, the short brink the inside in one side, and the locator protrusions 24 of formation pair of parallel, this locator protrusions 24 is chimeric with location notch 22.When chimeric, as the outstanding partly copulational protuberance 24a that forms on the end in the outside, the coupling recess 22a chimeric (seeing the enlarging section of Figure 10) that deepen this projection 24a and the part that is formed on groove 22 ends.

Among the long leg of liner plate spare 8, fractal one-tenth section is the guide rail 25 of コ font in the outside portion, and copulational protuberance 23a and this guide rail in the outside are chimeric, and the long leg of opposite side forms step-like thin-walled guide rail 26, inserts the below of inboard copulational protuberance 23b.

The surface of liner plate spare 8 is even surfaces, and the face side that the terminal base 3 of liner plate spare 8 is installed partly go up to form recess 27 (Fig. 9), after liner plate spare 8 is housed in this recess, slightly flushes with the surface of on every side terminal base 3.

As shown in Figure 9, terminal 30 constitutes (Fig. 6) by contact portion 31, terminal groove insertion section 32, kink 33 and joint Terminal 34.It is flat fixed contact that contact portion 31 overlooks.Terminal insertion section 32 from contact portion bend squarely and insertion end pilot trench 17 in.Slightly turn back squarely in connection part 20 top positions in one end of kink 33.Connection part 34 bends its leading section downwards squarely and forms.

The 16 times half side terminals of guide groove that are installed in terminal base 3 are 35a, 35b, 35c, 35d, 36 and 37, such contact portion 31 is not set, the part of end face protrudes in the surface of terminal base 3 in the terminal groove insertion section 32, as self-cleaning contact, part in these terminal groove insertion sections 32 beyond the protuberance, as shown in Figure 9, drawn in deeply in the terminal groove 17.

These terminals 30,35a, 35b, 35c, 35d, 36 and 37, insert in the terminal groove 17 corresponding respectively with terminal groove insertion section 32 (Fig. 8), contact portion 31 is housed in the recess 18, and in the joint Terminal 34 insertion end pilot trench 21, front end reaches in the connection part 20 (Fig. 6, Figure 10).

Like this, be formed on the fixing feet 38 (only having represented a part among Fig. 3) of 32 bottoms, terminal groove insertion section, reach the inboard by installing hole 19 (installing hole 19 runs through the bottom of terminal groove 17), so, from the inboard of terminal base 3 with this protuberance of riveted and fixed, with each terminal 30,35a, 35b, 35c, 35d, 36 and 37 and terminal base 3 integrated.

Label 39 among Fig. 8 and Fig. 9 is teats, and the effect of this teat is to make the 2nd travelling contact 13 not block ground to move smoothly.Be installed in 16 times half side terminal accommodating of guide groove in recess 40, above-mentioned teat 39 flushes with the general face 41 (the highest surface) of the terminal base 3 on every side that forms this recess 40.Among Fig. 8 and Fig. 9, among the surface of terminal base 3, the face mark round dot symbol that flushes with this general face 41 is being represented.Label the 42, the 43rd, projection, the effect of this projection is to be used for the location to lid 1 when being installed on the terminal base 3.

Below, the effect of present embodiment is described.Terminal 30,35a, 35b, 35c, 35d, 36 and 37, insertion end stroma 3 and shaping integratedly not resembling in the prior art, but after terminal base 3 is shaped, in terminal 30,35a, 35b, 35c, 35d, 36 insertion end pilot trench 17, in the inboard riveted and fixed of terminal base 3.

Therefore, do not resemble the prior art and inserting the trouble that the location is arranged when being shaped, fixed terminal 30,35a, 35b, 35c, 35d, 36 and 37 simply, and, needn't worry dislocation and distortion during shaping, so, can realize the miniaturization of terminal base 3, the degree of freedom of design is also big.

In addition, among the face side of terminal base 3, use liner plate spare 8 to cover the part of the kink 33 of connection parts 20 tops, when joint Terminal 34 is connected with the electric wire connecting junction of external power source, can prevent kink 33 sides come-up.

In addition, the surface of liner plate spare 8 is level and smooth tabulars, so, be positioned on the sliding surface of the 1st travelling contact 11 of connection part 20 tops concavo-convex fewly, can improve the durability of travelling contact 11.

And the 1st travelling contact 11 slides and is being almost on the liner plate spare 8 with one side with another contact portion 31, so, concavo-convex few in whole sliding scale, further improve the durability of travelling contact 11.

With riveted and fixed terminal 30,35a, 35b, 35c, 35d, 36 o'clock, owing to apply power from terminal base 3 inboards, so, the face side of terminal base 3 is crimped on the clincher tool, each terminal 30,35a, 35b, 35c, 35d, 36 the part that is exposed to terminal base 3 surfaces almost flush, so sliding surface is concavo-convex few.

Claims (2)

1. a slide switch has slide block, terminal base and terminal; This slide block has travelling contact and is free to slide towards prescribed direction; This terminal base is along the long formation longways of glide direction of slide block, and its face side is as the sliding surface of slide block, and length direction one end of its inside side is provided with connection part; This terminal is towards the long formation longways of glide direction of slide block, and its part is exposed to the face side of terminal base and becomes the fixed contact that travelling contact slides, and simultaneously, in length direction one end, is provided with the joint Terminal that reaches in the connection part; It is characterized in that, on terminal base, be formed with terminal groove, this terminal groove is at the surface opening of terminal base, and form can chimeric terminal shape, the surface that a part that constitutes the end face of the terminal of the form that the contact portion of flat fixed contact and terminal groove insertion section and joint Terminal form as one and terminal insertion section is protruded in terminal base becomes self-cleaning contact and the terminal of the form that forms as one with joint Terminal inserts this terminal groove, in the inside of terminal base side riveted and fixed, and, liner plate spare is installed in the face side of terminal base, look from the face side of terminal base, this liner plate spare covers the terminal part that overlaps with connection part.

2. slide switch as claimed in claim 1 is characterized in that, the surface of liner plate spare is even surface and flushes with fixed contact.

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